Cushioning member for pumps.



G. G. WERNER. OUSHIONING MEMBER `FOR, PUMPS.

APPLIOATION Hmm nu 11, 190s.

929,263; Patetea Juli?, 1909.

UNITED STATES APATENT OFFICE;

GEORGE C. WERNER, OF BEATRICE, NEBRASKA.

CUSHIONING MEMBER FOR PUMPS.

To all whom fit may concern:

Be it known thatyI, GEORGE C. WERNER, a citizen of theUnited States, residing at Beatrice, in the county of Gage and State of Nebraska, have invented a new and useful Cushioning Member for Pumps, of whichV the following is a specification.

This invention relates to cushioning means for pumps and has for its object to provide a cushioning member or spring for equalizing the operation of the pump and preventing damage from unnecessary jar when the device is Aemployed in connection with a windmill or similar operating means.

A further object of the invention is to provide a cushioning member including spaced heads having alined openings formed therein for the reception of the pump rod, said heads being provided with a marginal row of sockets adapted to receive the adjacent ends of the springs so that wien the pump is in operation a rocking movement will be imparted to the terminals of the springs and thus materially reduce friction between the parts.

A further object is to provide the heads with radiating slots or recesses which communicate with the sockets and, serve to lock the springs against accidental-displacement.

A still further object of the invention is generally to improve this class of devices so as to increase their utility, durability and efficiency.

Further objects and advantages will appear in the following description, it being understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the appended claim.

In the accompanying drawings forming a part of this specification: Figure 1 is a vertical sectional view of a pump attachment` constructed in accordance with my invention, the cushioning` members being shown in the positions assumed by them upon the completion of the down stroke of the pump. Fig. 2 is a perspective view of one of the heads detached. Fig. 3 is a similar view of a portion of one of the spring arms. Fig. 4 is a side elevation showing the attachment in position on a pump.

Similar numerals of reference indicate corresponding parts in all of the gures of the drawings.

The improved attachment forming the subject matter of the present invention in- Specicaton of Letters Patent.

Application led. May 11, 1908.

Patented July 27, 1909.

Serial No. 432,151.

cludes spaced disks or heads 5 and 6 having L alined openings 7 formed therein for the reception of a pump rod 8, the lower disk G being rigidly secured to the pump 9 and the upper disk or head disposed in spaced relation thereto, as shown.

The heads 5 and 6 are` each provided with a marginal fiange 10 and a flat portion 10 adapted to bear against a vertical bar or standard 11 carried by the pump and thus assist in guiding the movable head 5 when the pump is in operation.

Interposed between the heads or disks are a plurality of cushioning members or springs preferably seven in number, as shown, and each formed of a single piece of wire having an intermediate portion bent to form a coil 19., the wire being thence extended laterally to form diverging arms 13, the ends of which are bent to produce angularly disposed bearing lingers 14 adapted to engage sockets 15 formed in the adjacent disks or heads.

The sockets 15 are disposed concentric with the flange 10 and are each provided with a curved wall or bearing surface for engagement with the correspondingly curved or rounded terminal 16 of the bearing fingers 14 whereby when the pump is in operation a rocking movement will be imparted to the said bearing fingers and thus materially reduce friction between the parts.

The walls of the sockets 15 are projected beyond the adjacent faces of the disks or headsto form reinforcing ribs 17 which assist in retaining the terminal fingers 14 of the arms 13 within said sockets.

The fiange 10 of each disk or head is provided with a plurality vof vertical slots or recesses 18 which communicate with the sockets 15 and serve to maintain the arms 13 of the springs in spaced relation and prevent accidental displacement of the same.

It will thus be seen that when a downward movement is imparted to the pump rod 8 the upper head or disk 5 will be forced in the direction of the head 6 thus compressing the cushioning members or springs and causing a slight rocking movement of the terminals thereof so that friction or binding action between the parts is reduced to a minimum. By arranging the springs in this manner little, if any strain will be imposed on the wind mill during the up stroke, and during the down stroke the springs will act gradually to cushion the movement of the plunger rod and thus prevent the jar and noise in` 'cident to the operation .of devices of this character, as in the ordinary construction.

It will here be noted that the bearing ot each spring is on the curved bearing surface 16 of the terminal fingers la, said fingers being retained in engagementwith the Walls of the sockets during the operation let' the pump by reason of the slots or recesses 1S.

Itiwill also be noted that Vvthe [iat bearing surfaces 10 of ,the disks or heads not lonly ser-ve to guide the upper head in its vertical movement but by engagement with the posts or standards 1l serve to lock said heads against rotation on the pump. rod.

Having thus described the invention what is claimed is:

A `pump attachment of the class described comprising spaced heads having vconcave sockets in their adjoining faces and adjacent the margins thereof, each socket being partly surrounded by a reinforcing rib, .and a flange perpendicular to each head and disposed atthe margin thereof, each iiaiige having guide slots extending in the direction ot y'the adjoining sockets and opening thereinto,

cushioning springs interposed between the heads and each consisting of diverging arms, al coil at 'the meeting point between the arms, and terminal poi-tions extending at angles from the arms and having rounded ends bearing against the inner Walls of the respective sockets, said slots in the Hanges 

